SciX (Beta)The Science Explorer (SciX) is a NASA/SAO digital library portal for researchers in astronomy, earth science, heliophysics, physics, and planetary science. The four bibliographic collections maintained by SciX cover astronomy (including astrophysics, heliophysics, and planetary science), physics, earth science, and general science. Overall the system contains over 20 million records covering refereed publications plus all arXiv, ESS Open Archive, and EarthArXiv preprints. It launched publicly in 2023, and is still in beta as of 2024. This is an expansion of the Astrophysics Data System (ADS).